zabbix/templates/db/mysql_odbc/README.md

# MySQL by ODBC

## Overview

This template is designed for the effortless deployment of MySQL monitoring by Zabbix via ODBC and doesn't require any external scripts.

## Requirements

Zabbix version: 7.0 and higher.

## Tested versions

This template has been tested on:
- MySQL 5.7, 8.0
- Percona 8.0
- MariaDB 10.4

## Configuration

> Zabbix should be configured according to the instructions in the [Templates out of the box](https://www.zabbix.com/documentation/7.0/manual/config/templates_out_of_the_box) section.

## Setup

1. Create MySQL user for monitoring (`<password>` at your discretion):

```text
CREATE USER 'zbx_monitor'@'%' IDENTIFIED BY '<password>';
GRANT REPLICATION CLIENT,PROCESS,SHOW DATABASES,SHOW VIEW ON *.* TO 'zbx_monitor'@'%';
```

For more information, please see MySQL documentation https://dev.mysql.com/doc/refman/8.0/en/grant.html

2. Set the username and password in host macros ({$MYSQL.USER} and {$MYSQL.PASSWORD}).


### Macros used

|Name|Description|Default|
|----|-----------|-------|
|{$MYSQL.ABORTED_CONN.MAX.WARN}|<p>Number of failed attempts to connect to the MySQL server for trigger expression.</p>|`3`|
|{$MYSQL.REPL_LAG.MAX.WARN}|<p>The lag of slave from master for trigger expression.</p>|`30m`|
|{$MYSQL.SLOW_QUERIES.MAX.WARN}|<p>Number of slow queries for trigger expression.</p>|`3`|
|{$MYSQL.BUFF_UTIL.MIN.WARN}|<p>The minimum buffer pool utilization in percentage for trigger expression.</p>|`50`|
|{$MYSQL.DSN}|<p>System data source name.</p>|`<Put your DSN here>`|
|{$MYSQL.USER}|<p>MySQL username.</p>|`<Put your username here>`|
|{$MYSQL.PASSWORD}|<p>MySQL user password.</p>|`<Put your password here>`|
|{$MYSQL.CREATED_TMP_TABLES.MAX.WARN}|<p>The maximum number of created tmp tables in memory per second for trigger expressions.</p>|`30`|
|{$MYSQL.CREATED_TMP_DISK_TABLES.MAX.WARN}|<p>The maximum number of created tmp tables on a disk per second for trigger expressions.</p>|`10`|
|{$MYSQL.CREATED_TMP_FILES.MAX.WARN}|<p>The maximum number of created tmp files on a disk per second for trigger expressions.</p>|`10`|
|{$MYSQL.INNODB_LOG_FILES}|<p>Number of physical files in the InnoDB redo log for calculating innodb_log_file_size.</p>|`2`|

### Items

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|MySQL: Get status variables|<p>The item gets server global status information.</p>|Database monitor|db.odbc.get[get_status_variables,"{$MYSQL.DSN}"]|
|MySQL: Status||Database monitor|db.odbc.select[ping,"{$MYSQL.DSN}"]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `10m`</p></li></ul>|
|MySQL: Version||Database monitor|db.odbc.select[version,"{$MYSQL.DSN}"]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Uptime|<p>The amount of seconds that the server has been up.</p>|Dependent item|mysql.uptime<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Uptime')].Value.first()`</p></li></ul>|
|MySQL: Aborted clients per second|<p>Number of connections that were aborted because the client died without closing the connection properly.</p>|Dependent item|mysql.aborted_clients.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Aborted_clients')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Aborted connections per second|<p>Number of failed attempts to connect to the MySQL server.</p>|Dependent item|mysql.aborted_connects.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Aborted_connects')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Connection errors accept per second|<p>Number of errors that occurred during calls to accept() on the listening port.</p>|Dependent item|mysql.connection_errors_accept.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Connection errors internal per second|<p>Number of refused connections due to internal server errors, for example, out of memory errors, or failed thread starts.</p>|Dependent item|mysql.connection_errors_internal.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Connection errors max connections per second|<p>Number of refused connections due to the max_connections limit being reached.</p>|Dependent item|mysql.connection_errors_max_connections.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Connection errors peer address per second|<p>Number of errors while searching for the connecting client IP address.</p>|Dependent item|mysql.connection_errors_peer_address.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Connection errors select per second|<p>Number of errors during calls to select() or poll() on the listening port. The client would not necessarily have been rejected in these cases.</p>|Dependent item|mysql.connection_errors_select.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Connection errors tcpwrap per second|<p>Number of connections the libwrap library has refused.</p>|Dependent item|mysql.connection_errors_tcpwrap.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Connections per second|<p>Number of connection attempts (successful or not) to the MySQL server.</p>|Dependent item|mysql.connections.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Connections')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Max used connections|<p>The maximum number of connections that have been in use simultaneously since the server start.</p>|Dependent item|mysql.max_used_connections<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Max_used_connections')].Value.first()`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|
|MySQL: Threads cached|<p>Number of threads in the thread cache.</p>|Dependent item|mysql.threads_cached<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Threads_cached')].Value.first()`</p></li></ul>|
|MySQL: Threads connected|<p>Number of currently open connections.</p>|Dependent item|mysql.threads_connected<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Threads_connected')].Value.first()`</p></li></ul>|
|MySQL: Threads created per second|<p>Number of threads created to handle connections. If Threads_created is big, you may want to increase the thread_cache_size value. The cache miss rate can be calculated as Threads_created/Connections.</p>|Dependent item|mysql.threads_created.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Threads_created')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Threads running|<p>Number of threads which are not sleeping.</p>|Dependent item|mysql.threads_running<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Threads_running')].Value.first()`</p></li></ul>|
|MySQL: Buffer pool efficiency|<p>The item shows how effectively the buffer pool is serving reads.</p>|Calculated|mysql.buffer_pool_efficiency|
|MySQL: Buffer pool utilization|<p>Ratio of used to total pages in the buffer pool.</p>|Calculated|mysql.buffer_pool_utilization|
|MySQL: Created tmp files on disk per second|<p>How many temporary files mysqld has created.</p>|Dependent item|mysql.created_tmp_files.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Created_tmp_files')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Created tmp tables on disk per second|<p>Number of internal on-disk temporary tables created by the server while executing statements.</p>|Dependent item|mysql.created_tmp_disk_tables.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: Created tmp tables on memory per second|<p>Number of internal temporary tables created by the server while executing statements.</p>|Dependent item|mysql.created_tmp_tables.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Created_tmp_tables')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: InnoDB buffer pool pages free|<p>The total size of the InnoDB buffer pool, in pages.</p>|Dependent item|mysql.innodb_buffer_pool_pages_free<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li></ul>|
|MySQL: InnoDB buffer pool pages total|<p>The total size of the InnoDB buffer pool, in pages.</p>|Dependent item|mysql.innodb_buffer_pool_pages_total<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|
|MySQL: InnoDB buffer pool read requests|<p>Number of logical read requests.</p>|Dependent item|mysql.innodb_buffer_pool_read_requests<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li></ul>|
|MySQL: InnoDB buffer pool read requests per second|<p>Number of logical read requests per second.</p>|Dependent item|mysql.innodb_buffer_pool_read_requests.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: InnoDB buffer pool reads|<p>Number of logical reads that InnoDB could not satisfy from the buffer pool, and had to read directly from the disk.</p>|Dependent item|mysql.innodb_buffer_pool_reads<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li></ul>|
|MySQL: InnoDB buffer pool reads per second|<p>Number of logical reads per second that InnoDB could not satisfy from the buffer pool, and had to read directly from the disk.</p>|Dependent item|mysql.innodb_buffer_pool_reads.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li>Change per second</li></ul>|
|MySQL: InnoDB row lock time|<p>The total time spent in acquiring row locks for InnoDB tables, in milliseconds.</p>|Dependent item|mysql.innodb_row_lock_time<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Innodb_row_lock_time')].Value.first()`</p></li><li><p>Custom multiplier: `0.001`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|
|MySQL: InnoDB row lock time max|<p>The maximum time to acquire a row lock for InnoDB tables, in milliseconds.</p>|Dependent item|mysql.innodb_row_lock_time_max<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Custom multiplier: `0.001`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|
|MySQL: InnoDB row lock waits|<p>Number of times operations on InnoDB tables had to wait for a row lock.</p>|Dependent item|mysql.innodb_row_lock_waits<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Innodb_row_lock_waits')].Value.first()`</p></li></ul>|
|MySQL: Slow queries per second|<p>Number of queries that have taken more than long_query_time seconds.</p>|Dependent item|mysql.slow_queries.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Slow_queries')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Bytes received|<p>Number of bytes received from all clients.</p>|Dependent item|mysql.bytes_received.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Bytes_received')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Bytes sent|<p>Number of bytes sent to all clients.</p>|Dependent item|mysql.bytes_sent.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Bytes_sent')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Command Delete per second|<p>The Com_delete counter variable indicates the number of times the delete statement has been executed.</p>|Dependent item|mysql.com_delete.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Com_delete')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Command Insert per second|<p>The Com_insert counter variable indicates the number of times the insert statement has been executed.</p>|Dependent item|mysql.com_insert.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Com_insert')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Command Select per second|<p>The Com_select counter variable indicates the number of times the select statement has been executed.</p>|Dependent item|mysql.com_select.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Com_select')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Command Update per second|<p>The Com_update counter variable indicates the number of times the update statement has been executed.</p>|Dependent item|mysql.com_update.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Com_update')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Queries per second|<p>Number of statements executed by the server. This variable includes statements executed within stored programs, unlike the Questions variable.</p>|Dependent item|mysql.queries.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Queries')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Questions per second|<p>Number of statements executed by the server. This includes only statements sent to the server by clients and not statements executed within stored programs, unlike the Queries variable.</p>|Dependent item|mysql.questions.rate<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Questions')].Value.first()`</p></li><li>Change per second</li></ul>|
|MySQL: Binlog cache disk use|<p>Number of transactions that used a temporary disk cache because they could not fit in the regular binary log cache, being larger than binlog_cache_size.</p>|Dependent item|mysql.binlog_cache_disk_use<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Binlog_cache_disk_use')].Value.first()`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Innodb buffer pool wait free|<p>Number of times InnoDB waited for a free page before reading or creating a page. Normally, writes to the InnoDB buffer pool happen in the background. When no clean pages are available, dirty pages are flushed first in order to free some up. This counts the numbers of wait for this operation to finish. If this value is not small, look at the increasing innodb_buffer_pool_size.</p>|Dependent item|mysql.innodb_buffer_pool_wait_free<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Innodb number open files|<p>Number of open files held by InnoDB. InnoDB only.</p>|Dependent item|mysql.innodb_num_open_files<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Innodb_num_open_files')].Value.first()`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Open table definitions|<p>Number of cached table definitions.</p>|Dependent item|mysql.open_table_definitions<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Open tables|<p>Number of tables that are open.</p>|Dependent item|mysql.open_tables<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Open_tables')].Value.first()`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Innodb log written|<p>Number of bytes written to the InnoDB log.</p>|Dependent item|mysql.innodb_os_log_written<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Innodb_os_log_written')].Value.first()`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Calculated value of innodb_log_file_size|<p>Calculated by (innodb_os_log_written-innodb_os_log_written(time shift -1h))/{$MYSQL.INNODB_LOG_FILES} value of the innodb_log_file_size. Innodb_log_file_size is the size in bytes of the each InnoDB redo log file in the log group. The combined size can be no more than 512GB. Larger values mean less disk I/O due to less flushing checkpoint activity, but also slower recovery from a crash.</p>|Calculated|mysql.innodb_log_file_size<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|

### Triggers

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|MySQL: Service is down||`last(/MySQL by ODBC/db.odbc.select[ping,"{$MYSQL.DSN}"])=0`|High||
|MySQL: Version has changed|<p>MySQL version has changed. Acknowledge to close the problem manually.</p>|`last(/MySQL by ODBC/db.odbc.select[version,"{$MYSQL.DSN}"],#1)<>last(/MySQL by ODBC/db.odbc.select[version,"{$MYSQL.DSN}"],#2) and length(last(/MySQL by ODBC/db.odbc.select[version,"{$MYSQL.DSN}"]))>0`|Info|**Manual close**: Yes|
|MySQL: Service has been restarted|<p>MySQL uptime is less than 10 minutes.</p>|`last(/MySQL by ODBC/mysql.uptime)<10m`|Info||
|MySQL: Failed to fetch info data|<p>Zabbix has not received any data for items for the last 30 minutes.</p>|`nodata(/MySQL by ODBC/mysql.uptime,30m)=1`|Info|**Depends on**:<br><ul><li>MySQL: Service is down</li></ul>|
|MySQL: Server has aborted connections|<p>The number of failed attempts to connect to the MySQL server is more than {$MYSQL.ABORTED_CONN.MAX.WARN} in the last 5 minutes.</p>|`min(/MySQL by ODBC/mysql.aborted_connects.rate,5m)>{$MYSQL.ABORTED_CONN.MAX.WARN}`|Average|**Depends on**:<br><ul><li>MySQL: Refused connections</li></ul>|
|MySQL: Refused connections|<p>Number of refused connections due to the max_connections limit being reached.</p>|`last(/MySQL by ODBC/mysql.connection_errors_max_connections.rate)>0`|Average||
|MySQL: Buffer pool utilization is too low|<p>The buffer pool utilization is less than {$MYSQL.BUFF_UTIL.MIN.WARN}% in the last 5 minutes. This means that there is a lot of unused RAM allocated for the buffer pool, which you can easily reallocate at the moment.</p>|`max(/MySQL by ODBC/mysql.buffer_pool_utilization,5m)<{$MYSQL.BUFF_UTIL.MIN.WARN}`|Warning||
|MySQL: Number of temporary files created per second is high|<p>Possibly the application using the database is in need of query optimization.</p>|`min(/MySQL by ODBC/mysql.created_tmp_files.rate,5m)>{$MYSQL.CREATED_TMP_FILES.MAX.WARN}`|Warning||
|MySQL: Number of on-disk temporary tables created per second is high|<p>Possibly the application using the database is in need of query optimization.</p>|`min(/MySQL by ODBC/mysql.created_tmp_disk_tables.rate,5m)>{$MYSQL.CREATED_TMP_DISK_TABLES.MAX.WARN}`|Warning||
|MySQL: Number of internal temporary tables created per second is high|<p>Possibly the application using the database is in need of query optimization.</p>|`min(/MySQL by ODBC/mysql.created_tmp_tables.rate,5m)>{$MYSQL.CREATED_TMP_TABLES.MAX.WARN}`|Warning||
|MySQL: Server has slow queries|<p>The number of slow queries is more than {$MYSQL.SLOW_QUERIES.MAX.WARN} in the last 5 minutes.</p>|`min(/MySQL by ODBC/mysql.slow_queries.rate,5m)>{$MYSQL.SLOW_QUERIES.MAX.WARN}`|Warning||

### LLD rule Database discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Database discovery|<p>Scanning databases in DBMS.</p>|Database monitor|db.odbc.discovery[databases,"{$MYSQL.DSN}"]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `1d`</p></li></ul>|

### Item prototypes for Database discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|MySQL: Size of database {#DATABASE}||Database monitor|db.odbc.select[{#DATABASE}_size,"{$MYSQL.DSN}"]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|

### LLD rule Replication discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|Replication discovery|<p>If "show slave status" returns Master_Host, "Replication: *" items are created.</p>|Database monitor|db.odbc.discovery[replication,"{$MYSQL.DSN}"]<p>**Preprocessing**</p><ul><li><p>Discard unchanged with heartbeat: `1d`</p></li></ul>|

### Item prototypes for Replication discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|MySQL: Replication Slave status {#MASTER_HOST}|<p>The item gets status information on the essential parameters of the slave threads.</p>|Database monitor|db.odbc.get["{#MASTER_HOST}","{$MYSQL.DSN}"]|
|MySQL: Replication Slave SQL Running State {#MASTER_HOST}|<p>This shows the state of the SQL driver threads.</p>|Dependent item|mysql.slave_sql_running_state["{#MASTER_HOST}"]<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Replication Seconds Behind Master {#MASTER_HOST}|<p>The amount of seconds the slave SQL thread has been behind processing the master binary log. A high number (or an increasing one) can indicate that the slave is unable to handle events from the master in a timely fashion.</p>|Dependent item|mysql.seconds_behind_master["{#MASTER_HOST}"]<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Matches regular expression: `\d+`</p><p>⛔️Custom on fail: Set error to: `Replication is not performed.`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|
|MySQL: Replication Slave IO Running {#MASTER_HOST}|<p>Whether the I/O thread for reading the master's binary log is running. Normally, you want this to be Yes unless you have not yet started a replication or have explicitly stopped it with STOP SLAVE.</p>|Dependent item|mysql.slave_io_running["{#MASTER_HOST}"]<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|
|MySQL: Replication Slave SQL Running {#MASTER_HOST}|<p>Whether the SQL thread for executing events in the relay log is running.</p><p>As with the I/O thread, this should normally be Yes.</p>|Dependent item|mysql.slave_sql_running["{#MASTER_HOST}"]<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `1h`</p></li></ul>|

### Trigger prototypes for Replication discovery

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----------|--------|--------------------------------|
|MySQL: Replication lag is too high||`min(/MySQL by ODBC/mysql.seconds_behind_master["{#MASTER_HOST}"],5m)>{$MYSQL.REPL_LAG.MAX.WARN}`|Warning||
|MySQL: The slave I/O thread is not running|<p>Whether the I/O thread for reading the master's binary log is running.</p>|`count(/MySQL by ODBC/mysql.slave_io_running["{#MASTER_HOST}"],#1,"eq","No")=1`|Average||
|MySQL: The slave I/O thread is not connected to a replication master||`count(/MySQL by ODBC/mysql.slave_io_running["{#MASTER_HOST}"],#1,"ne","Yes")=1`|Warning|**Depends on**:<br><ul><li>MySQL: The slave I/O thread is not running</li></ul>|
|MySQL: The SQL thread is not running|<p>Whether the SQL thread for executing events in the relay log is running.</p>|`count(/MySQL by ODBC/mysql.slave_sql_running["{#MASTER_HOST}"],#1,"eq","No")=1`|Warning|**Depends on**:<br><ul><li>MySQL: The slave I/O thread is not running</li></ul>|

### LLD rule MariaDB discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|MariaDB discovery|<p>Additional metrics if MariaDB is used.</p>|Dependent item|mysql.extra_metric.discovery<p>**Preprocessing**</p><ul><li><p>JavaScript: `The text is too long. Please see the template.`</p></li></ul>|

### Item prototypes for MariaDB discovery

|Name|Description|Type|Key and additional info|
|----|-----------|----|-----------------------|
|MySQL: Binlog commits|<p>Total number of transactions committed to the binary log.</p>|Dependent item|mysql.binlog_commits[{#SINGLETON}]<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Binlog_commits')].Value.first()`</p></li></ul>|
|MySQL: Binlog group commits|<p>Total number of group commits done to the binary log.</p>|Dependent item|mysql.binlog_group_commits[{#SINGLETON}]<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Binlog_group_commits')].Value.first()`</p></li></ul>|
|MySQL: Master GTID wait count|<p>The number of times MASTER_GTID_WAIT called.</p>|Dependent item|mysql.master_gtid_wait_count[{#SINGLETON}]<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Master GTID wait time|<p>Total number of time spent in MASTER_GTID_WAIT.</p>|Dependent item|mysql.master_gtid_wait_time[{#SINGLETON}]<p>**Preprocessing**</p><ul><li><p>JSON Path: `$[?(@.Variable_name=='Master_gtid_wait_time')].Value.first()`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|
|MySQL: Master GTID wait timeouts|<p>Number of timeouts occurring in MASTER_GTID_WAIT.</p>|Dependent item|mysql.master_gtid_wait_timeouts[{#SINGLETON}]<p>**Preprocessing**</p><ul><li><p>JSON Path: `The text is too long. Please see the template.`</p></li><li><p>Discard unchanged with heartbeat: `6h`</p></li></ul>|

## Feedback

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